Refrigerating apparatus



y 2, 1929. H. A. GREENWALD 1.718.953

REFRIGERATING APPARATUS Filed Dec. 27, 1926 avwzntoz Patented July 2, 1929.

UNITED STATES v 1,718,953 PATENT oFFicE.

HAROLD A. GREENWALD, OF DETROIT,-MICHIGAN, ASSIGNOR T THOMAS 0. WHITE- HEAD, OF DETROIT, MICHIGAN.

REFRIGERATING APPARATUS.

Application filed December 27, 1926. Serial No. 157,386.

This invention relates generally to refrigerating apparatus of the domestic or household type and consists of certain novel features of construction, combinations and arrangements of parts as will be hereinafter more fully described, and particularly pointed out in the appended claim.

In the accompanying drawing:

Figure 1 is a side elevation of a portable unit of a refrigerating apparatus embodying my invention.

Figure 2 is a view similar to F lgure with one of the side sections in elevated position.

Figure 3 is a rear end elevation of the construction shown in Figure 1.

Figure 4 is a front end elevation of the construction shown in Figure 1.

Referring now tothe drawing, 1 is a pump in which a suitable refrigerant such as methol chloride is adapted to be compressed, 2 is a radiator in which the compressed refrigerant is adapted to be condensed, 3 is a fan for drawing air through the radiator and over the pump to facilitate the condensation of the refrigerant and to cool the pump, and 4 is an electric motor for driving the fan 3 and pump 1. As shown, the radiator 2, pump 1 and motor 4 are preferably arranged in the order named upon a substantially flat base 5, while the fan 3 is non-rotatably mounted upon a suitable drive shaft 6 extending between the motor 4 and pump 1. Preferably the base 5 has a relatively smooth top plane surface 7 and is provided at its opposite ends with short depending-legsS'. In order that the apparatus will be compact, the width of the base 5 is substantially equal to the width of the radiator 2 and the length thereof is substantially equal to the distance between the front face of the radiator and the rear face of the motor.

In the present instance a sectional hood 8' is used to cover the pump 1, fan 3 and motor 4 and is removably mounted upon the base 5, preferably in rear of the radiator. As shown, the width of the hood 8 is substantially equal to the length or depth of the radiator and preferably has a substantially uniform width throughout its length. The width of the hood 8 throughout its length is substantially equal to the width of the radiator 2, while the length of said hood is substantially equal to the distance between the rear face of the radiator and the rear end of the base 5. Preferably the hood 8 is formed of four sections 9, 10, 11, 12 respectively. As shown, the side sections 9 and 10 respectively of the hood are detachably connected at their lower edges by suitable spring catches 11 to the base 5 and are hingedly connected at their upper edges .to the lower edges of the transversely curved or arched section 11, while the latter is bolted at its forward end to the radiator 2 and is supported at its rear end upon the end section 12. As shown, this end section 12 conforms in shape to the cross sectional area of the radiator and has a series of vertically spaced elongated slots or openings 13 therein for air. If desired louvres 14 may be provided at the upper edges of these openings 13 for concealing the openings and for deflecting downwardly the air passing outwardly therethrough.

Thus with this construction the working parts such as the pump 1, fan 3, and motor 4 are normally concealed but may be readily inspected, repaired or replaced by lifting the side sections 9 and 10 respectively. In this connection it will be noted that suitable handles 15 are provided upon the side sections 9 and 10 to facilitate movement of such sections by hand to the desired position. As a result a neater and more compact apparatus has been provided. In fact it is an object of the invention to provide a portable unit that is equivalent-to an article of furniture that can be readily installed as such in any convenient place in a dwelling. Inasmuch as the hood 8 projects rearwardly from the radiator 2 to a point in rear of the motor 4, it will also be apparent that air will be effectively drawn through the radiator by the fan 3 and will be directed by the hood 8 over the pump 1 and motor 4. Hence the compressed refrigerant will condense more readily in the radiator and the pump 1 and motor 4 will be able to operate for longer periods without becoming overheated.

\Vhile it is believed that from the foregoing description, the nature and advantage of for drawing air through the radiator to facilitate the condensation of the refrigerant, a motor for driving the pump and fan, a common support for said pump, radiator and motor comprising a substantially flat base, the radiator, fan and motor being arranged in the order named upon said base, the length of said base being substantially equal to thedistance between the front face of the radiator and the rear face of the motor, and an enclosure for said pump, fan and motor including a hood extending from the rear face of the radiator to a point in rear of the rear face of the motor, the top section of said hood being rigid 15 with the radiator, the side sections of said hood being hingedly connected to the top section and detachably connected to the base at the side edges thereof whereby to provide ready access to said pump, fan and motor normally concealed within the enclosure, the cross sectional area of said hood being uniform throughout its length and being substantially equal tothe cross sectional area of the radiator, and an apertured end section rigid with the top section aforesaid and the base and having discharge apertures for air drawn into the hood by said fan.

In testimony whereof I aflix my signature.

HAROLD A. GREEN 

